* {
  margin: 0;
  padding: 0;
}

.pinglun .rev {
  width: 800px;
  margin: auto;
}
.pinglun .rev .con {
  width: 100%;
  height: 1000px;
  border: 1px solid #ccc;
  margin: 20px auto;
  padding: 10px;
  box-sizing: border-box;
  list-style-type: none;
  overflow: auto;
}
.pinglun .rev .con li {
  margin: 10px 0;
  padding: 5px;
  line-height: 2;
  border-radius: 5px;
  clear: both;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}
.pinglun .rev #text {
  height: 80px;
  display: block;
  margin: auto;
  margin-top: 20px;
  width: 100%;
}
.pinglun .rev #btn {
  width: 80px;
  height: 30px;
  border: 1px solid #ccc;
  float: right;
  margin-top: 10px;
}
.pinglun .ret {
  text-decoration: none;
  color: #f08585;
  font-weight: 900;
  position: fixed;
  right: 0;
  top: 300px;
  width: 50px;
  height: 50px;
  background: rgba(60, 161, 255, 0.459);
  text-align: center;
  line-height: 50px;
  border-radius: 4px;
}